Mental harrassment

I got married in 2014.It was an arranged marriage.I am a working woman.My husband used to earn 80,000per month and me 40,000.My parents and in laws both live in different cities.Post marriage my husband used to show some cause and ask me to give him my salary every month. He also made me pay my share of honeymoon(70,000) saying he is short on money. This went on for some months and I started doubting his reasons as there was no purchase made in the house or no other expenditure but still he kept saying his salary was not sufficient to maintain the house which hardly cost 10,000. I told him that I want to save my salary completely for our future kids and he didnt like the idea but kept calm.Over a few months,I have started saving the money by sending it to my parents. A few months later he came to me saying his parents want to build a new house and that I should give him my salary. I asked him how much he needed and he said he first needs 1.5lakhs.I told him I would gather the money(30,000 per month)over a few months and then give him it,but he insisted that I transfer him the same 30,000 immediately every month.This was the cue I needed and I said I will not give him any money and he made a very big issue. He said that my parents are using all my money when they themselves are in a very good position and have no need to take my money. I even offered to show the deposits and confirmed him that he is the nominee. He insisted that I do not save the money at my parents and I told him no. He said he does not want to live anymore and wants to commit suicide by jumping from the top of his office building. I was very worried but I knew he was bluffing. That evening his parents called me and told me that I am very lucky to get married to a guy like him and should do whatever he says without saying no. I did not respond much and later he went into a room,closed the door and started beating the wall loudly.I was petrified by his extreme behaviour and i explained everything to my parents and they came to my home and confronted him and he promised us that he will not ask for my salary and take good care of me. Even though I thought this was the end of our problems,it was really the beginning.Post that he began fighting with me for every reason and started making me feel guilty saying I made a big scene out of nothing by asking my parents to interfere.His mother came to our home and created a big scene saying they are the parents of a son and that whatever they do is always right and that my parents should not interfere. I told her that I dont care if they are parents of a son and she kept mum. After this she kept visiting us every month and used to harass me mentally by saying disturbing things indirectly. I had a miscarriage during that time and she said it was because of me. I clearly told her that I was very disturbed about the miscarriage and nicely asked her not to remind about it,but she paid a deaf ear. I then became pregnant and even then my miseries continued.Every month of my pregnancy he would fight with me about something or other.These fights usually happened on the weekends and when I see his call logs,there will be long duration phone call on friday evening from his parents or sister which seemed to cause a disturbance in him. When I was eight month pregnant,his mother came to stay with us for a month saying she wanted to take care of me. She kept burning all the dishes or putting lots of chilly in them and made me starve during that time. I have a mentally challenged sister-in-law.She kept saying that I too would give birth to such a child which caused severe mental distress to me since I have already suffered a miscarriage. She kept saying that my in-laws would come and stay with us so that the problems in our relation would settle,which is why my in-laws started creating problems in our relation in the first place. I blatantly told her no and gave her respectful but serious replies. She calmly left our house but 2 weeks later my husband came home very serious in the evening and started calling me foul names and when asked him to control his voice,he said he has a hand and would not mind to use it .This happened when I was eight month pregnant. I kept calm since it was night and it was risky. That night I was very distressed by his behavior. I understood that it was the work of my in-laws and explained him that she harassed me severely during her stay and that I am not happy with his behavior and our marriage. To this he went into the kitchen hurriedly and when i followed him I saw him burning a spatula.He said all the problems are because of his words and that he should burn his tongue.I stopped him but I was severely depressed since this is not how normal people behave. I went to my parents home for delivery and post my delivery he blackmailed me for 3 days saying he will not attend our son's cradle ceremony since he will not get leave in the office. When I cried and begged him to come since he is the father and should be present ,he became cool and said that he would come. When I asked how he will manage the leave,he said it is not that difficult to get a days leave. I was surprised that he would blackmail me emotionally for 3 days when he knew he could come.When he and his parents attended the cradle ceremony,my father-in-law asked about the land my parents said would give me as dowry and told them that they should sell it(indirectly suggesting them to give the money after selling it).He also kept saying that the land offered to sister has gained very high value suggesting I was being offered less. Would this come under dowry harrassment? I stopped making any calls to him and distanced him since I had to take care of the baby. He then visited me during that time and gave me a letter. When I opened it,it was written with blood which scared the shit out of me. Why would any normal husband write a letter with blood!! The letter was 3 page long saying he loved me and that we should start living peacefully,but I am very much worried. My main concerns are : 1. My husband's behavior is not normal and it is causing me severe distress. Will this qualify for domestic violence and mental harassment? 2. All the disputes we had are a result of his parents and sister encouraging him to take control over me. I have no proof of this ,but before and after our every fight there is a long duration call to them. Will this suffice as proof? 3. The discussion that my in-laws had about he property offered as dowry,would that come under dowry harassment? I do not want to continue my marriage since my husband's behavior could severly effect my child too!! Please suggest how I should proceed and how to take action for the mental torture I suffered.